test: do not assume cwd in snapshot tests

PR-URL: #53146
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Chemi Atlow <chemi@atlow.co.il>
Reviewed-By: Moshe Atlow <moshe@atlow.co.il>
Reviewed-By: Yagiz Nizipli <yagiz.nizipli@sentry.io>
Reviewed-By: James M Snell <jasnell@gmail.com>

test/common/assertSnapshot.js

@@ -25,7 +25,7 @@ function replaceWindowsPaths(str) {
 }
 
 function replaceFullPaths(str) {
-  return str.replaceAll(process.cwd(), '');
+  return str.replaceAll(path.resolve(__dirname, '../..'), '');
 }
 
 function transform(...args) {
@@ -78,7 +78,7 @@ async function spawnAndAssert(filename, transform = (x) => x, { tty = false, ...
     return;
   }
   const flags = common.parseTestFlags(filename);
-  const executable = tty ? 'tools/pseudo-tty.py' : process.execPath;
+  const executable = tty ? path.join(__dirname, '../..', 'tools/pseudo-tty.py') : process.execPath;
   const args = tty ? [process.execPath, ...flags, filename] : [...flags, filename];
   const { stdout, stderr } = await common.spawnPromisified(executable, args, options);
   await assertSnapshot(transform(`${stdout}${stderr}`), filename);

test/parallel/test-runner-output.mjs

@@ -3,6 +3,8 @@ import * as fixtures from '../common/fixtures.mjs';
 import * as snapshot from '../common/assertSnapshot.js';
 import { describe, it } from 'node:test';
 import { hostname } from 'node:os';
+import { chdir, cwd } from 'node:process';
+import { fileURLToPath } from 'node:url';
 
 const skipForceColors =
   process.config.variables.icu_gyp_path !== 'tools/icu/icu-generic.gyp' ||
@@ -14,8 +16,10 @@ function replaceTestDuration(str) {
     .replaceAll(/duration_ms [0-9.]+/g, 'duration_ms *');
 }
 
+const root = fileURLToPath(new URL('../..', import.meta.url)).slice(0, -1);
+
 const color = '(\\[\\d+m)';
-const stackTraceBasePath = new RegExp(`${color}\\(${process.cwd().replaceAll(/[\\^$*+?.()|[\]{}]/g, '\\$&')}/?${color}(.*)${color}\\)`, 'g');
+const stackTraceBasePath = new RegExp(`${color}\\(${root.replaceAll(/[\\^$*+?.()|[\]{}]/g, '\\$&')}/?${color}(.*)${color}\\)`, 'g');
 
 function replaceSpecDuration(str) {
   return str
@@ -149,6 +153,9 @@ const tests = [
   }),
 }));
 
+if (cwd() !== root) {
+  chdir(root);
+}
 describe('test runner output', { concurrency: true }, () => {
   for (const { name, fn } of tests) {
     it(name, fn);